双拼
Traditional (Taiwan):
雙拼
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two-item combo (usu. referring to a food dish, esp. two types of meat served with rice or noodles)
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duplex
semi-detached
real estate
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double pinyin (input method in which each syllable is typed using no more than two keystrokes: one for the initial consonant and one for the final)
computing
Character by character
Sources